Bar support and spacer



M3379, 1939- w. P. AWBREY 2,157,275

BAR SUPPORT AND SPACER Filed Aug. 1, 1938 -/Z W 7E'NVENTOR,

ATTORNEYS.

Patented May 9, 1939 UNITED STATES EATENT OFFICE Application August 1,

Claims.

This invention relates to new and improved means for supporting andspacing the reinforcing bars used in concrete construction.

The main objects of this invention are to provide a bar support andspacer that has leg members constructed by bending a straight wireadjacent one of its ends to produce a short and a long leg terminatingin a common plane; to provide a sturdy andstable bar support and spacerfrom a minimum amount of material; to provide a simple and economicalreinforcing bar support and spacer for use in concrete constructionwherein the concrete is vibrated during the forming and positioning ofthe concrete; to provide a bar support and spacer of simple structurethat will not easily become entangled when thrown together in bulk.

Other objects and advantages of this invention will appear during thecourse of the detailed specification, referring to the drawing wherein:

Figure 1 is a perspective view of a reinforcing bar support and spacerinvolving this invention.

Fig. 2 is a side elevation of the support and spacer shown in Fig. 1With reinforcing bars shown in dotted lines in the operative position.

Fig. 3 is an end view of the device shown in Fig. 2.

Fig. 4 is a plan view of the device as shown in Fig. 2.

Fig. 5 is a perspective view of the support and spacer for use as acontinuous high chair.

Fig. 6 is a side elevation of the modified form shown in Fig. 5; and,

Fig. 7 is an end elevation of the device shown in Fig. 6.

Throughout the several views like reference characters designate similarparts and the numeral It is a longitudinally supporting rod. While thisrod has been shown as the common- 1y used round drawn yet any of thevarious shaped rods new in general use might be substituted therefor,without departing from the spirit of the invention.

The leg member I2 is made by bending a straight wire at 54 adjacent oneof its ends to form a short leg I6 and a long leg I8. The angle betweenthe two legs is preferably an acute angle in order to produce a strongand stable struc 50 ture. These leg members l2 are welded at to the rodIll at spaced apart intervals. The spacing of these leg members may beregular or irregular and at different distances to facilitate the properspacing and supporting of various types of reinforcing requirements.

1938, Serial No. 222,422

As shown in the preferred form, Figs. 1 to i, it will be noted that thepoint of weld 28 is intermediate the ends of the long leg I8 so that aportion of the leg member extends above a plane parallel with the planeof support and tangent to the upper side of the rod l0, therebypresenting spacing shoulders between which the reinforcing bars 22(shown in dotted lines) may be positioned.

The leg members are secured in staggered re lation so that adjacentlonglegs l8 extend in opposite direction so that the load is properlydistributed and the spread of the leg members is sufficient to preventtipping over when the vibrating machine is being used, or for any otherreason. The welding of the parts may be varied to produce projectionsabove the rod and desired height; furthermore, any desired change in theheight of rod In between certain limits, above the supporting surfacemay be obtained by proper positioning of the leg members relative to rodl0.

Since this type of bar support and spacer is designed especially for usein supporting and spacing beam bars, it has been found convenient toextend the rod I0 at each end beyond the end leg members so as to spacethem from the side wall of the beam, as the rod snuggly fitstransversely in the beam forms.

Referring now to the modified form shown in Figs. 5, 6 and 7. whereinthe rod I0 is attached to the leg members substantially at the bend, itwill be noted that this type of structure presents a continuous highstructure which is suitable for use to support top steel in slabs andbent up bars at beams or columns. The substantially vertically disposedshort legs iii adjacent rod It, give a maximum load carrying capacitywhile the outwardly inclined long legs is provide a wide base to preventtipping over when setting the reinforcing steel.

When the relation of the supporting rod and the leg members arepositioned as shown in Figs. 5, 6 and '7, it is desirable to positionthe reinforcing bars 22 on the rod In above certain of the leg members[2, and secure the parts together by tie wires 24, as indicated indotted lines.

It is possible to weld the leg members in spaced apart relationcorresponding with any desired spacing of the reinforcing bars, however.standard spacings of the leg members may be used regardless of theparticular spacing of the reinforcing bars.

It is apparent that the invention as described,

provides a reinforcing bar support and spacer which presents a sturdyand rigid structure with a minimum amount of material, as the simpleoperation of bending the leg members is very inexpensive, and with thesupporting rod, presents a structure whereby the height of thesupporting may easily be varied between certain limits, by simplyadjusting the legs relative to the rod before welding.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is:

1. A bar support and spacer comprising a longitudinal supporting rod; aplurality of leg members secured to said rod in spaced apart parallelrelation to support said rod above a planar surface, each of said legmembers consisting of a straight wire bent adjacent one end to form ashort leg and a long leg whereby the shorter leg makes a greater angleto said supporting planar surface than does the longer leg when thesupport and spacer is in the operative position.

2. A bar support and spacer comprising a longitudinal supporting rod, aseries of like bent wire leg members secured at the point of bending tosaid supporting rod in spaced apart relation, each of said leg membershaving a relatively short and along leg so related that all terminate ina common plane with the long legs positioned alternately on oppositesides of said supporting rod.

3. A bar support and spacer comprising a longitudinal supporting rod, aseries of bent Wire leg members, having a short leg and a long legwelded at the point of bend to said supporting rod in spaced apartrelation and being positioned so that the short legs of adjacent legmembers are in like relation on opposite sides of the vertical centralplane of said supporting rod and entirely below said supporting rod whenthe device is in the operative position on a horizontal supportingsurface.

4:. A bar support and spacer comprising a longitudinal supporting rod, aseries of bent wire leg members, each having a long leg and a short legand being welded to said supporting rod in spaced apart relation andwith the outer leg members spaced apart from adjacent ends of saidsupporting rod, the extremities of the legs of each of said leg membersbeing positioned to terminate in a common plane below said supportingrod while the apexes of the leg members extend alternately above saidsupporting rod at its opposite sides.

5. A bar support and spacer comprising a longitudinal supporting rod; aseries of angled wire leg members having a long leg and a short legdisposed at an acute angle to each other, said supporting rod beingsecured to the long legs of spaced apart leg members, whereby all thelegs of the leg members terminate in a common plane below saidsupporting rod, with the upper portion of adjacent leg members extendingthereabove at alternate sides thereof to form a longitudinally disposedtrough.

WILLIAM POWELL AWBREY.

